is the director of Capability Associates Pty Ltd. He is a Fellow of Engineers Australia, INCOSE, IML and RSNSW and is a senior member of IEEE. With more than 40 years of experience spanning communications engineering, systems engineering, capability management, and leadership, he is widely recognized as a leading authority in requirements and systems practice. A former professor at UNSW Canberra and director of the Capability Systems Centre, he is the author or coauthor of 14 books and more than 450 refereed papers. He continues to consult internationally on large-scale, complex engineering and capability development programs.